Malicious PDF — malware analysis report

Static analysis result for SHA-256 6162383df9dcaf4d…

MALICIOUS

PDF

42.6 KB Created: 2021-05-16 03:35:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 9c84b4dca01395eccc557341be3c40fd SHA-1: 09e92284f7aa06c8a933f7bb3df049566b24b0cc SHA-256: 6162383df9dcaf4d4e37767e8408516711967aa8fbc3a007139cd77c24bc74b9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as "game hacks" or "free generators". The primary lure URL is https://netcdn.xyz/app/406889139/coin-master-link-today-game-hack. The document's structure and embedded links strongly suggest a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/406889139/coin-master-link-today-game-hack In PDF document text
    • http://depilhome-fr.fr/images/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • http://depilhome-fr.fr/images/coin-master-link-spin_GM406889139.pdfIn PDF document text
    • http://depilhome-fr.fr/images/free-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://depilhome-fr.fr/images/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
    • http://depilhome-fr.fr/images/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
    • http://depilhome-fr.fr/images/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://depilhome-fr.fr/images/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://depilhome-fr.fr/images/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • http://depilhome-fr.fr/images/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://depilhome-fr.fr/images/coin-master-com_GM406889139.pdfIn PDF document text
    • http://depilhome-fr.fr/images/client-minecraft_GM479516143.pdfIn PDF document text
    • http://depilhome-fr.fr/images/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://depilhome-fr.fr/images/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • http://depilhome-fr.fr/images/hack-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://depilhome-fr.fr/images/free-spins-coin-master-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://depilhome-fr.fr/images/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://depilhome-fr.fr/images/minecraft-pc-download-free-full-version_GM479516143.pdfIn PDF document text
    • http://depilhome-fr.fr/images/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://depilhome-fr.fr/images/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://depilhome-fr.fr/images/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049fe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49FE 25560 bytes
SHA-256: 14369fc416cf3dc73b9bfddcc41ee08958cbf95c5e649be99d674ffa1d51fe4f
font_01_sfnt_off000084a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84A4 18072 bytes
SHA-256: 9ba18410547103ebf9977f1e8d0e3c845630f063c7b47a9dc3698bca19a27760

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